Sound Deadener Mat = Powermat, not Fatmat Sound Deadener Mat: Created by JLC Audio in late 2006... JLC Audio online since 2004.. not quite 15 years.. I've used both, and Fatmat did smell worse/didn't stick as much.. Powermat (Sound Deadener Mat) wasn't bad.. seemed about the same quality as Dynamat but a little cheaper Edit, fyi: Sounddeadenermat/Jlcaudio: JLC Audio 419 S 2nd Ave Corry, PA 16407 US Fatmat: Fatmat Sound Control Inc 20 Park Road Painsville, Ohio 44077 United States I started selling my material just in my home town just to the people i knew thats where 15 years come in and also we just started selling 100% butyl products that does come in sheets. Our rolls does have butyl in them and it is not asphalt like others. Butyl mat you can roll up, tell me why you can't? The reason why we went way beyond is because how many companies do you know that sells more sizes then we do and offer more thicknesses we have a 50 and 80 mil thick for our butyl mix and our 100% butyl we have 60, 80 and 120 mil thick also we have liquid in 1 and 5 gallons, hood liner and floor liner. We are getting ready to do our liquid in quarts and pint. We are also looking to get aluminum tape